She famously hit out at magazine photos that transformed her body into a vision of perfection. But despite her protests Kate Winslet has yet again been the 'victim' of some serious airbrushing.

The Oscar-nominated actress appears on the promotional poster for her latest film showing off luscious skin and flawlessly unlined features.

Airbrushing specialists believe that Miss Winslet has once again posed for a shot which has been technically altered to create an image far removed from the natual reality.

Last year it emerged that a poster image of the actress to advertise the movie 'Romance and Cigarettes' had been tampered with.

And now this promotional photograph, published by Sony Pictures to promote their film 'The Holiday', shows an image drastically different from this unguarded shot of the star at the movie's world premiere this week.

Jason Facey, an airbrushing expert with 25 years experience, said: "We can see in the shot taken of her at the premiere that she has quite pronounced lines and bagging in the delicate under-eye area, which is what you would expect of someone in their early 30s.

"But in the photograph published to advertise her new film, the image has been photoshopped to erase the nose to mouth lines and lessen the crow's feet."

He added: "Interestingly, some of the lines around the eyes have been left in. This is probably so the airbrushing looks as natural as possible.

"The dewy look has been achieved with heavy stage make-up."

Miss Winslet's publicist denied the shots have been tampered with. She said: "There has been absolutely no airbrushing on the stills for the film."

But Jason described how, to meet the movie industry's demands for physical perfection, photography experts will spend time tweaking photographs to create a false image.

He said: "Everyone expects so much that a lot of movie bosses will insist on airbrushing away the slightest flaw.

"This is also because they panic that their real life shots will look out of place when pitted against the competition."

He added: "It has always been done. In Marilyn Monroe's era for example, airbrushing experts would spend hours spraying paint on the images to hide all the lines. Nowadays, the same thing will be done, but on computer with photoshop."

The 31-year-old Titanic star, who is married to director Sam Mendes, was furious when a dramatically altered photograph of her - with thinner legs and a flatter stomach - appeared on the front of GQ in 2003.

"The retouching is excessive," she said. "I do not look like that and I do not desire to look like that."

But the editor Dylan Jones responded: "Various parts have been improved, including her stomach and legs.

"Kate saw them before publication and loved them."

Her latest film 'The Holiday', in cinemas next month, is about two women who swap homes with each other and fall in love with the men they meet.